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East Lansing Trial
Michigan
Potato Leafhopper Resistant Trial
East Lansing, Ingham County, Michigan State University Sown April 1997 (non-irrigated)
24/May
28/Jun
03/Aug
09/Sep
2000 Total
1999 Total
1998 Total
3-yr Total
Entry
Untrt
Trt
Untrt
Trt
Untrt
Trt
Untrt
Trt
Untrt
Trt
Untrt
Trt
Untrt
Trt
Untrt
Trt
RHINO***
1.72
1.75
1.55
1.77
0.80
1.00
1.01
1.03
5.08
5.55
5.73
6.08
6.77
6.79
17.57
18.42
5347 LH
1.51
1.56
1.58
1.69
0.84
0.98
0.93
0.92
4.86
5.14
5.30
5.90
6.45
6.40
16.60
17.45
Clean Sweep 1000
1.49
1.54
1.52
1.72
0.75
0.92
0.91
0.93
4.66
5.11
5.39
5.43
6.51
6.34
16.55
16.88
Arrest
1.48
1.59
1.60
1.71
0.85
0.98
0.94
0.96
4.86
5.24
4.98
5.62
6.54
6.51
16.39
17.32
Interceptor
1.41
1.47
1.56
1.65
0.83
0.96
0.96
0.94
4.75
5.01
5.02
5.62
6.27
6.23
16.04
16.86
Safeguard
1.37
1.56
1.50
1.78
0.77
0.92
0.92
0.93
4.55
5.18
4.93
5.71
6.29
6.49
15.80
17.37
Ameriguard301
1.43
1.47
1.59
1.64
0.75
0.99
0.89
0.94
4.66
5.04
4.93
6.09
6.02
6.77
15.62
17.90
DK 121 HG
1.36
1.54
1.45
1.72
0.75
0.93
0.90
0.95
4.46
5.14
5.04
5.49
5.75
6.26
15.25
16.88
8-variety average
1.47
1.56
1.54
1.71
0.79
0.96
0.93
0.95
4.74
5.18
5.17
5.74
6.32
6.47
16.23
17.39
Exerimental
DS 9710
1.48
1.50
1.59
1.81
0.80
1.02
0.96
0.98
4.85
5.30
5.15
5.92
6.45
6.62
16.45
17.84
4R30A
1.48
1.56
1.50
1.70
0.81
0.90
0.93
0.95
4.71
5.10
4.98
5.41
6.35
6.15
16.03
16.55
4R25 A
1.62
1.56
1.56
1.64
0.78
1.00
0.94
1.00
4.90
5.21
5.08
5.60
6.17
6.58
16.14
17.38
CW6035
1.60
1.50
1.48
1.72
0.78
0.96
0.91
0.91
4.76
5.09
4.89
5.44
6.14
6.23
15.80
16.76
CW 6043
1.55
1.65
1.57
1.77
0.78
0.95
0.99
1.00
4.88
5.36
5.07
5.83
5.99
6.50
15.94
17.69
CW 6034
1.56
1.65
1.48
1.76
0.76
0.99
0.92
0.94
4.72
5.34
4.89
5.80
5.97
6.54
15.57
17.68
6-variety average
1.55
1.57
1.53
1.73
0.79
0.97
0.94
0.96
4.80
5.23
5.01
5.67
6.18
6.44
15.99
17.33
Non-Resistant Check Varieties
Magnum III WET
1.89
1.79
1.63
1.80
0.93
1.06
1.01
1.00
5.45
5.65
5.65
6.15
6.39
6.41
17.48
18.20
Innovator+Z
1.66
1.72
1.63
1.75
0.95
1.01
1.03
1.03
5.28
5.54
5.52
6.10
6.28
6.79
17.42
18.42
Pioneer5454
1.75
1.80
1.65
1.81
0.90
1.05
0.95
1.03
5.25
5.68
5.44
5.96
6.29
6.53
16.98
18.17
Vernal
1.75
1.79
1.50
1.65
0.85
0.99
0.96
0.92
5.06
5.35
4.98
5.26
6.34
5.94
16.38
16.56
4-variety average
1.76
1.78
1.60
1.75
0.91
1.03
0.99
1.00
5.26
5.56
5.40
5.87
6.33
6.42
17.07
17.84
18-Variety mean
1.56
1.61
1.55
1.73
0.82
0.98
0.95
0.96
4.87
5.28
5.16
5.74
6.29
6.45
16.33
17.47
5% LSD
all varieties
0.12
0.10
0.07
0.06
0.24
0.53
0.38
0.64
treatments
0.04
0.03
0.03
0.02
0.08
0.16
0.43
0.30
var with trt
0.17
0.13
0.14
0.13
0.09
0.10
0.09
0.09
0.37
0.27
0.54
0.52
0.60
0.56
0.99
1.00
CV (%)
6.69
6.04
8.86
7.75
4.92
8.96
6.79
5.25

Design:   Two-factor split-plot, with insecticide treatment as the whole and variety as the subplot
Insects:   Baythroid was applied to the treatment plots every two weeks from June to September
Cuttings: Four in each year

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Last Update September 25, 2003